You're right the BRI was actually 144k, 2x64k B channels and 1x16k D channel. 112k was available on misconfigured hardware and gimped bit-robbing lines where so

You're right the BRI was actually 144k, 2x64k B channels and 1x16k D channel. 112k was available on misconfigured hardware and gimped bit-robbing lines where some of the bits on the B channels were used for signaling in lieu of a D channel.